华庆白257区压裂施工参数优化

Optimization of Hydraulic Fracturing Parameters in Bai 257 Well Area of Huaqing Oilfield

合理的压裂施工参数是压裂设计的重点和难点,也是决定压裂成败的关键因素。在分析华庆白257井区储层压裂地质特征的基础上,提出了利用已压裂井的测试压裂和净压力拟合结果。形成压裂井模板,在此基础上进行前置液量,施工排量,加砂量以及砂液比等施工参数的优化。确定工区合理施工排量在1.8～2.0 m3/min左右,前置液百分比15%～30%左右,加砂量为30 m3左右,平均砂液比为30%左右,并将优化结果应用于同井区的其它井,取得了良好的效果。

Reasonable fracturing parameters is the key and the difficult part of the fracturing design,and it determines the success or failure of the fracturing.On the base of analyzing the fracturing geological characteristics of Bai257 well area and put forward a method that using the result of the small scale fracturing test and the net presssure fitting to set a fracturing template,then optimized the fracturing parameters on the base of the template.Finally,get the reasonable fracturing parameter＇s,the reasonable delivery rate is 1.8~2.0 m3/min,the preflush rate is 15%~30%,the sand volumn is about 30 m3,average sand liquid ratio is about 30%.The optimizing results makes the well performed better than the neighboring well which fractured formerly.